11-3/4 inch Duplex Stainless Casing
Seamless duplex 2205 stainless steel oil well casing, 11.75 inch OD, 9.8 mm wall, high strength for deepwater applications. Meets HTS 7304.24.4050 criteria for stainless steel seamless drill casing with OD 285.8-406.4 mm and thin walls.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If cut and threaded for fittings
Threaded stainless tubes become tube/pipe fittings under 7307, not raw casing.
If for carbon steel equivalent specs
Non-stainless carbon steel casing same size classifies under different material heading.
If imported as gas compressor component
End-use as compressor parts shifts classification from drilling casing to machinery parts.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Specify duplex grade (e.g
• UNS S31803) in documentation for proper stainless steel verification
• Avoid bundling with couplings; separate import of accessories prevents set classification issues
• Confirm pressure ratings match API 5CT to validate drilling end-use classification
Related Products under HTS 7304.24.40.50
9-5/8 inch Stainless Steel Oil Well Casing
Seamless stainless steel casing pipe with 9.625 inch outside diameter and wall thickness of 10 mm, designed for oil and gas drilling to line and stabilize wellbores. Classified under HTS 7304.24.4050 due to its seamless construction, stainless steel material, casing use in drilling, OD between 285.8-406.4 mm, and wall thickness under 12.7 mm.
10-3/4 inch L-80 Stainless Casing
Seamless Type 304 stainless steel L-80 grade casing with 10.75 inch OD and 11.5 mm wall thickness for high-pressure oil/gas wells. Falls under HTS 7304.24.4050 as drill casing of stainless steel with specified OD range and thin wall under 12.7 mm.
13-3/8 inch 13Cr Stainless Casing
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12-1/4 inch Super Duplex Casing
Seamless super duplex 2507 stainless casing with 12.25 inch OD and 11.2 mm wall thickness for extreme corrosion environments in oil/gas drilling. Classified in HTS 7304.24.4050 for stainless steel seamless casing within size limits.
14 inch 316L Stainless Casing
Seamless 316L stainless steel casing pipe, 14 inch OD, 10.5 mm wall thickness, for corrosive offshore oil well applications. HTS 7304.24.4050 covers this stainless steel drill casing size and specification.
15-1/2 inch Stainless Drill Casing
Seamless stainless steel drill casing 15.5 inch OD, 11.9 mm wall thickness for large diameter oil/gas wells. Perfect fit for HTS 7304.24.4050 as stainless seamless casing under 16 inch OD limit.